Paper-box machine



June 15 1926.

H. A. INMAN El AL APiaR Box MACHINE Filed Sept. 25, 1925 5 Sheets-Sheet1 I N VEN TORS H. A. INMAN ET AL PAPER BOX MACHINE Filed Sept. 25, 1925S sheets-sheet 2 June 15 June 15 H. A. INMAN ET .AL

PAPER BOX MACHINE Filed p 2 1925 5 Sheets-Sheet 3 June 1926. 1,589,078

H. A. INMAN r AL PAPER BOX MACHINE Filed Sept. 1925 5 Sheets-Sheet 4 45Q 53A E'EL:IlII 231 16 1 g 37 45 e I 36 fi Z6 Z7 H; p 4 15 E V e Z5 53 Ir ENTORS Sagidz Patented June 15, 1926.

uni-Tao era-res 1.58am rarsnr oerics.

HARRY A. INMAN AND WILLIAM H. INMAN, OF EEVIARK, YORK, ASSIGNORS TOBLOOMER BROS. COMPANY, OF NEWARK, NEW YORK, .A. CORPORATION OF NEW YORK.

PAPER-BOX MACHINE.

Application filed September 25, 1925. Serial no. 58,678.

This invention relates to paper box machmes of the variety, for example,adapted for folding a blank about a former and pressing the glued foldsin place to form the box. One object of the invention is to provide amachine of this character comprising improved mechanism for manipulatingthe blank and for applying pressure to the glued folds to effectivelyset and secure the same in position. More specifically stated, it is anobject of the invention to provide such a machine having a moving formerabout whichthe blank'is folded and comprising roll-like members arrangedto apply a relatively heavy pressure" to the glued folds repeatedlyduring movement of the former in opposite directions, for securelysetting. the folds in thelde sired position. Another object is toprovide a machine of the character described having an improved formerprovided with one or more blank gripping parts operated automatically bycooperating parts on the frame for moving the gripping parts to and fromposition for holding the blank on the former while its glued folds orflaps are being pressed and secured in place.

To these and other ends the invention resides in certain improvementsand combinations of parts, all as will be hereinafter more fullydescribed, the novel features be ing pointed out in the claims at theend of the specification.

In the drawings Figure 1 is a sectional elevation on the line 11 inFigure 4:, showing a paper box machine embodying the present invention;

Figure 2 is a similar view but with the parts in a different operatingposition; v

Figure 3 is a perspective view of a paper box such as made by themachine;

Figure 4 is a top plan view of the parts shown in Figures 1 and 2;

Figure 5 is an enlarged plan view of portions of the machine partly insection on the line 5 -5 in Figure 1;

Fi 6 is a view of partsshown in Fig ure 5 but in a differentjopeifatingposition;

Figure 7 is an enlargedelevation of portionso'f' themachine" partly in'section on the line We? inv Figure 1; Y

Figure 8 is a view similar-to Figure? but with the parts in. a,different opei ngpo ai-tioaand shown and described in the saidapplication I to which reference may be had for a more completedescription of the machine as a whole, the present improvement relatingmore especially to means for holding and pressing the blank on theformer. The ma chine comprises a main frame having side portions 10formed with seats or sills 11 on which is supported a bed plate 12carrying mechanism for pressing the blank folds, 1111i for stripping thecompleted box from the former as the latter is reciprocated from abovetoward and from the bed plate, together with portions of the means forejecting the stripped boxes. The former is shown as a block-like member18 fixed on the lower end of a plunger lt'carri'ed atits upper end bymechanism (not shown) by which it is reciprocated vertically toward andfrom the bed plate. The mechanism for reciprocating, the former may beof any suitable variety such as shown in our said application and formsno part of the present inventfon.

Fixed to'the frame 10 at the sides of the path of the plunger are crossbars 15 on which are carried rails 16. Supported on the latter by anysuitable means and preferably so as to be adjustable toward and from thepath of the former are brackets 17 carrying vertical strips 18. Thesestrips are curved outwardly at their upper ends as at 19 and extendalong and adj acent the path of move ment of the ends of the former forthe purpose of folding and holding the end flaps of the box during themovement of the former to initially press-the glued surfaces of thefoldstogether'. Similarly at the op-.

p'o site sides oftlie former are" folding strips 20, 21, respectively,mounted on cross rails 22 of the frame. It willbe'understo-od that whenthe former is raised to its upper position,a blankis fed beneath it"asdescribed in our plicatioil and that the former in;

each yoke is a compression spring 42, Figure 2,- bearing at one endagainst the corresponding block and at the other against the yoke, sothat the latter are pressed resiliently towards the former and engagethe same simultaneously at opposite ends with counterbalanced pressure.A tension spring 43, fixed to a bracket 44 on the frame and to a bracket45 on the yoke, tends to raise the same to the initial position shown inFigure 1. The lower side of each yoke is provided with an abutment orbracket 46 ha ing a facing 47 of leather or other suitable cushioningmeans located in the path of the bottom of the former. As the latterlesmends therefore, from the position shown in Figure 1, its bottomengages the abutment 47 of each pressing member or yoke 37 to positivelyrock the same and produce a substantially pure rolling action betweenthe surface 38 ofthe member and the folded end portions of theblank onthe former. As well understood in the art, the secure setting of gluedblank folds requires for best results a substantial pressure continuedor repeated over an appreciable interval of time while the gluepenetrates and acquires the tackey consistency requisite to its holdingpower. This is eiificiently provided by the present invention throughthe heavy pressure applied by the pressing members or roll sectors 37and through the fact that the folds are repeatedly pressed while theformer is moving in opposite directions downwardly and back from itsextreme lower position, adjacent which position of reverse movement itis usually driven at its lowest rate of speed. By this arrangement theglued folds are subjected to repeated pressing over. an appreciableinterval of time without slowing down the maximum practical rate oftravel of the former, or the rate of production of the machine. Therocking of the roll sectors 37 by the engagement of the abutment portion47 thereof by the former itself, insures accurate coordination ofmovement by an eX ceedingly simple and reliable actuating device.

The shaft 40' carrying each yoke is preferably supported for adjustmenttoward and from the former, to secure the desired degree of pressureagainst the latter and also for accommodatin the machine to differentsizes of former for different boxes. Accordingly the ends of each shaft40'are lined in sleeves 48 each threadedly engaged with a sleeve 49rotatably mounted on one of'a pair of spacedtie rods 50 mounted attheir, ends in supporting bearings 51 bolted as shown at the cor: nersof the bed plate 12; Each sleeve 49 preferably has'fixedon its inner enda hand' also a look nut 54 at the outer side of sleeve 48, although anadditional lock nut may be provided on the inner side of the latter alsoif desired to further secure the same in ad justed position. It isapparent from this construction that by rotating wheels 52 and sleeves49 either of the pressing roll sectors or yokes 37 may be alined with orset up toward or retracted from the former, tor obtaining the desiredpressure on the blank folds.v l he stresses produced during the pressingoperation are transmitted to the rods 50 which are formed of a materialadapted to withstand the same and relieve the stresses upon the bedplate and the frame of the machine each sleeve 48 being securely backedup and locked after adjustment by its lock nut 54. Additional supportingor steadying means are provided in the bearings for the shafts 40located on the latter intermediate the forks of the yokes 37. Eachbearing 55 rises from a base plate 56 which may merely rest or beadjustably bolted to the bed plate 12, to assist in taking up anydownward component of thrust on the shafts 40.

The means for stripping the boxes from the former are locatedintermediate the fold ing strips and pressing members 37 and above thelatter and comprise in the present in stance edged stripping bars 57,Figure 1, carried by the upper ends of spring strips 58 fixed at theirlower ends to upright posts 59 on the base plate 56 of the bearings 55.A set screw 60 in each strip 58 provides for adjustment of the strippers5'? toward and from the path of movement of the former and blal k and itis apparent from this construction that the strippers 57 are adapted toyield and permit the downward last passage of the blank but to engagethe upper edges of the latter as the former rises after completion ofthe box; to strip the box from the former and from beneath the grippingparts 25 the engagement of which is not sufficiently positive tointerfere with the stripping action. Posts 59 carry also fixed holdingstrips 61 in extension of the folding st *ips 18 for holding the blankfolds during the descent of the former.

\Vhen the completed box is stripped as described it drops upon theabutment ledges 47 of the pressing members, while the latter are intheir upper-most position, and is thence pushed laterally on to tracks62 on the frame by ejecting means comprising a vertically arranged plate63 fixed one rod 64 sliding in a bearing 65 on the bed plate 12 andreciprocated by any suitable means such. as described in our saidapplication, in coordination with the movements of the former.

In operation, the former descends upon a blank fed beneath it andcarries thesame downward y tiss es the. fielding are li'ill engagementwith the blank folds during movement of said former and resilient meansbetween said supporting means and yoke for pressing the yoke toward theformer.

9. In a box making machine, a frame, a former reciprocatin on saidframe, folding means on the frame cooperating with said former to fold ablank about the same, a pair of pressing roll sectors arranged forrocking movement on the frame in engag ment with the folded blankportions on opposite sides of the former during movement of the same inopposite directions to effect repeated pressing of the blank folds, anddevices arranged for engagement by the former to rock said sectors.

10. In a box making machine, a frame, a former reciprocating on saidframe, folding means on the frame cooperating with said former to fold ablank about the same, a pair of shafts on opposite sides of the path ofthe former, yokes embracing said shafts and mounted to slidetransversely thereof and rock thereon, said yokes having curved facesarranged for rolling engagement with the blank folds on opposite sidesof said former during movement of the same, spring means between saidshafts and yokes for pressing the latter toward the former, and devicesactuated by the movement of the former for rocking said yokes.

11. In a box making machine, a frame, a former reciprocating on saidframe, folding means on the frame cooperating with said former to fold ablank about the same, a pressing member arranged for rocking movement onthe frame in engagement with the folded portions of the blank duringmovement of said former in opposite direc tions to efiect repeatedpressing of said folds, and means arranged to engage the blanksubsequently to pressing by said member and to strip the same from theformer.

12. In a box making machine, a frame, a former reciprocating on saidframe, folding means on the frame cooperating with said former to fold ablank about the same, a pressing member arranged for rocking movement onthe frame in engagement with the folded portions of the blank duringmovement of said former in opposite directions to effect repeatedpressing of said folds, and means for stripping the blank from theformer located between said folding means and pressing member.

13. In a box making machine, a frame, a former reciprocating on saidframe, folding means on the frame cooperating with said former to fold ablank about the same, gripping means movable/on the former for holding afolded blank portion, a pressing member arranged for rocking movement onthe frame in engagement with folded portions of the blank duringmovement of said former in opposite directions, means between saidfolding means and pressing member for stripping the blank from theformer, an ejector for discharging the box at one side of the frame.

14. In a box making machine, a frame, a former reciprocating on saidframe, folding means on the frame cooperating with said former to foldand hold a blank about-the same, members arranged for rolling pressingengagement with folded blank portions on opposite sides of the former,blank stripping means, an ejector for discharging the box laterallybelow said folding means at one side of the frame, and a gripping parton said former adjacent the discharge side of the frame operatedautomatically by the movement of the former for holding thecorresponding blank fold.

15. In a box making machine, a frame, a former reciprocating on saidframe, folding means on the frame cooperating with said former to foldand hold a blank about the same, members arranged for rolling pressingengagement with folded blank portions on opposite sides of the former,blank stripping means between said folding means and pressing members,an ejector for discharging the stripped box at one side of the frame, agripping part on the former adjacent the discharge side of the frame forholding the corresponding blank fold, and cooperating parts on the framefor actuating said gripping part during movement of the former.

16. In a box making machine, a frame, a former movable on said frame,folding means on the frame for folding a blank about the former, agripping part pivoted on the former for holding a blank fold, resilientmeans for moving said partto gripping position, a latch on the formerfor holding said part inoperative, and cooperating parts on said framefor tripping said latch and for returning said gripping part toinoperative position during movement of said former.

17. In a box making machine, a frame, a former movable on said frame andprovided with an operating shank, folding means on the frai'ne forfolding a blank about said former, a gripping part pivoted on saidformer for holding a blank fold, resilient means for moving said part togripping position, a spring actuated latch pivoted on said shank forholding said gripping part inoperative, a tripping part on said framefor moving the latch to release said gripping part for movement to blankholding position, and a {art on said frame for returning said grippingpart to inoperative position during movement of said former.

HARRY A. INMAN. WILLIAM H. INMAN.

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